Collins, a key swing vote on the tax bill, said on CNN’s “State of the Union” that she did not think the mandate repeal should be in the tax bill, but she indicated she thinks the rise in premiums from repealing the mandate could be mitigated if two other bills passed first.

Collins did not definitively say if she would vote against the tax bill if the two other bills do not pass, but she did say she would like to see them dealt with first.

“I'm worried about the impact on premiums,” Collins said on ABC’s “This Week" during another Sunday interview. “And that's why we're going to need to pass legislation. And I would like to see that done before we go to the tax bill.”

That request could be very hard to meet, however, given that Democrats say they will block the Alexander-Murray bill from passing if Republicans keep the mandate repeal in the tax bill.

The Congressional Budget Office has found that if the mandate is repealed, premiums would rise 10 percent.

Collins argues her reinsurance bill would help cancel that out. Other Republicans have criticized reinsurance as just giving more money to insurers.

“I hope [mandate repeal] will be dropped, or that bills that have been introduced by Senators Alexander and Murray and Bill Nelson and myself will be adopted to mitigate the impact of those provisions,” Collins said.